PID instance data block and ethernet communication with faceplate

HI,

I’m using the FB76, as PID block in S7, V 5.3 and CPU 416-2, there is a instance data block for it, and also I made the link for cascade, first: how the CASCADE_CUT will change, because there is not any help for that.

Second: I should connect this PID blocks to APAC+, and there is PID faceplate, so how those will communicate through the TCP-IP Ethernet, I know that I have to use FB5, FB6 or FB50 and FB60, but how change the parameter in instance data block with faceplate!??!

Thanks

hi,

the other problem is also the output of PID block is not working, i tried to test the example which posted here, buy one member, and it still jave problem, and doesnt take action from PV and SP, just some time starteing to increase till 100%, and normally if put other value in PV or SP should start todecreasing but i couldnt chnage the increasing to decreasing!??!

Thaks

hI,

Thanks, it was helpfull, anyhow i changed the PID block to FB61 which was more useful, and the problem is now to communicate with WINCC through industry ethernet, the question is if there be some change in the faceplate, how put the action to block?!?

as i know i can direct communicat from WINCC to DB in PLC S7, i mean i can address the CP-443-1 with MAC address and write and read from each DB?!?! is it right?!?

if right, then how update the values in DB and consequently in blocks, because if right now i change in for example instance block of PID function block, then i have to stop the simulated PLC and start again to be updated, so what can i do to direct updated when i download the DB within change or have update when been changed from WINCC?!?

Thnaks

hi,

how can simulate the S7 5.3+SP2 with PLCSIM 5.3+SP2, with ethernet communication?